WO2009063861A1 - Filter filtration material, method for producing the same and filter unit - Google Patents

Filter filtration material, method for producing the same and filter unit Download PDF

Info

Publication number
WO2009063861A1
WO2009063861A1 PCT/JP2008/070499 JP2008070499W WO2009063861A1 WO 2009063861 A1 WO2009063861 A1 WO 2009063861A1 JP 2008070499 W JP2008070499 W JP 2008070499W WO 2009063861 A1 WO2009063861 A1 WO 2009063861A1
Authority
WO
WIPO (PCT)
Prior art keywords
filtration material
substrate
porous membrane
filter
fiber layer
Prior art date
Application number
PCT/JP2008/070499
Other languages
French (fr)
Japanese (ja)
Inventor
Masaaki Mori
Masatoshi Suzuki
Original Assignee
Nitto Denko Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nitto Denko Corporation filed Critical Nitto Denko Corporation
Priority to CN200880116261A priority Critical patent/CN101861195A/en
Priority to US12/742,625 priority patent/US8900351B2/en
Priority to EP08848805.1A priority patent/EP2221096B1/en
Publication of WO2009063861A1 publication Critical patent/WO2009063861A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1692—Other shaped material, e.g. perforated or porous sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12—Composite membranes; Ultra-thin membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12—Composite membranes; Ultra-thin membranes
    • B01D69/1214—Chemically bonded layers, e.g. cross-linking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/30—Polyalkenyl halides
    • B01D71/32—Polyalkenyl halides containing fluorine atoms
    • B01D71/36—Polytetrafluoroethene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B01D2239/0654—Support layers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Laminated Bodies (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

It is intended to provide a filter filtration material which comprises a polytetrafluoroethylene (PTFE) porous membrane and has secured rigidity by integration of the porous membrane and a breathable support material. The filter filtration material is excellent in breathability and joinability of respective layers constituting the filtration material. In the filter filtration material, the breathable support material comprises a breathable substrate and a fiber layer located on the substrate such that it comes into contact with the PTFE porous membrane, and has a structure in which the substrate and the fiber layer are joined to each other by allowing fiber of the fiber layer to penetrate inside the substrate and entangling it with the substrate, and the fiber layer contains polyolefin-containing fiber joined to the PTFE porous membrane.
PCT/JP2008/070499 2007-11-14 2008-11-11 Filter filtration material, method for producing the same and filter unit WO2009063861A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN200880116261A CN101861195A (en) 2007-11-14 2008-11-11 Filter filtration material, method for producing the same and filter unit
US12/742,625 US8900351B2 (en) 2007-11-14 2008-11-11 Filter medium and method of manufacturing the same and filter unit
EP08848805.1A EP2221096B1 (en) 2007-11-14 2008-11-11 Filter filtration material, method for producing the same and filter unit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-295815 2007-11-14
JP2007295815 2007-11-14

Publications (1)

Publication Number Publication Date
WO2009063861A1 true WO2009063861A1 (en) 2009-05-22

Family

ID=40638710

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/070499 WO2009063861A1 (en) 2007-11-14 2008-11-11 Filter filtration material, method for producing the same and filter unit

Country Status (6)

Country Link
US (1) US8900351B2 (en)
EP (1) EP2221096B1 (en)
JP (2) JP5608323B2 (en)
CN (2) CN104841204B (en)
TW (1) TWI444221B (en)
WO (1) WO2009063861A1 (en)

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CN107008057A (en) * 2017-04-19 2017-08-04 天津大学 A kind of three-dimensional composite filtering material capable of washing

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US20210060476A1 (en) * 2018-03-27 2021-03-04 Focus Industries Limited Nanomaterial including nanofibers and beads for hepa air filter media
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JP7228360B2 (en) * 2018-10-12 2023-02-24 株式会社クボタ Membrane elements and membrane separation equipment
JP7228361B2 (en) * 2018-10-17 2023-02-24 株式会社クボタ MEMBRANE ELEMENT MANUFACTURING METHOD
CN113015570A (en) * 2019-10-08 2021-06-22 进和技术株式会社 Dust collecting filter cloth and bag filter
CN113652800B (en) * 2021-08-18 2022-08-23 浙江冠诚科技有限公司 Super-soft bi-component waterproof breathable non-woven fabric and production process thereof

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107008057A (en) * 2017-04-19 2017-08-04 天津大学 A kind of three-dimensional composite filtering material capable of washing

Also Published As

Publication number Publication date
CN104841204A (en) 2015-08-19
EP2221096A4 (en) 2011-08-31
JP2014030825A (en) 2014-02-20
EP2221096B1 (en) 2017-03-22
TW200936219A (en) 2009-09-01
CN101861195A (en) 2010-10-13
CN104841204B (en) 2017-07-18
US8900351B2 (en) 2014-12-02
TWI444221B (en) 2014-07-11
JP5608323B2 (en) 2014-10-15
EP2221096A1 (en) 2010-08-25
JP6017402B2 (en) 2016-11-02
JP2009136863A (en) 2009-06-25
US20100269464A1 (en) 2010-10-28

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